While configuring an outbound SMTP plugin in Aria Operations, the following error is received when sending a test email;
Test was not successful: Email test error: [Invalid Addresses]
It is possible to curl the SMTP endpoint on port 25.
Aria Operations 8.x
The issue may be caused by one of the causes below:
Cause 1st:
Ensure the field 'Receiver email address' has a valid email address entered.
This email address is only used for testing purposes, and after the configuration is saved, the email value is removed from the configuration.
Cause 2nd:
Contact SMTP administrator to add all Aria Operations nodes' IP addresses as exception in relay restriction setting.
An explanation of all the fields in the SMTP plugin configuration and their purposes can be found in the document below.